The question is difficult for a beginner like me
 
        
             
        
        
        
Okay its 1,6,7,12,14,19,22
             1+5+1+5+2+5+3
27,31,36,41,46
        
                    
             
        
        
        
Well i think is better expressed if x^2=9.then x=3, that will be better expressed. Now the converse if clearly false, since if x^2<span>=9</span> it is possible that <span>x=−3. I hope this is useful for you</span>
        
             
        
        
        
2n-7+12n-9
combined like terms 2n+12n and -7-9
your answer is 14n-16
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
sorry if i am incorrect but that is my best guess